The following story is excerpted from TIME’s special edition, The Science of Sleep, which is available at Amazon. Anyone who has nodded off on the subway, faked alertness in a meeting at work or ...

A naturopathic doctor’s video explaining the viral phenomenon of the “second wind” and its effects on sleep hormones has gone viral, resonating with many night owls. In the clip, Dr Kara explains that ...

Most adults wish they could catch more ZZZs for better health, sharper focus or simply to wake up feeling rested. Despite that desire, sufficient sleep remains elusive for millions. About one in three ...